Ethereal void arcanist shrouded in swirling mist, towering amidst an otherworldly landscape, their form hyper-realistic and intricately detailed, illuminated by breathtaking volumetric lighting. The scene is rendered flawlessly in octane, utilizing Unreal Engine to capture the haunting beauty of their presence, with HDR enhancing the dynamic range and depth, in a striking 9:16 aspect ratio, evoking a sense of enigmatic power and ancient mystery.